Distance between monomers of the PSI homodimer measured at the centres of mass (COMs) of each peptide.

<p>Distance between the two monomers of the PSI dimer revealed that the peptides maintained steady contact at the dimer interface regardless of pH. Both pH 3.0 (blue line) and pH 7.4 (orange line) simulations maintained an average distance of approximately 6 Å throughout the trajectories.